python中strlen_Python 字符串操作

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Python 字符串操作(string替换、删除、截取、复制、连接、比较、查找、包含、大小写转换、分割等)

去空格及特殊符号

s.strip() .lstrip() .rstrip(‘,’)

复制字符串#strcpy(sStr1,sStr)

sStr= ‘strcpy’sStr=sStr

sStr= ‘strcpy’

printsStr

连接字符串#strcat(sStr1,sStr)

sStr= ‘strcat’sStr= ‘append’sStr+=sStrprintsStr

查找字符#strchr(sStr1,sStr)

sStr= ‘strchr’sStr= ‘s’nPos=sStr1.index(sStr)printnPos

比较字符串#strcmp(sStr1,sStr)

sStr= ‘strchr’sStr= ‘strch’

printcmp(sStr1,sStr)

扫描字符串是否包含指定的字符#strspn(sStr1,sStr)

sStr= ‘1345678’sStr= ‘456’

#sStrand chars both in sStrand sStr

printlen(sStrand sStr)

字符串长度#strlen(sStr1)

sStr= ‘strlen’

printlen(sStr1)

将字符串中的大小写转换#strlwr(sStr1)

sStr= ‘JCstrlwr’sStr=sStr1.upper()#sStr= sStr1.lower()

printsStr

追加指定长度的字符串#strncat(sStr1,sStr,n)

sStr= ‘1345’sStr= ‘abcdef’n= 3sStr+=sStr[0:n]printsStr

字符串指定长度比较#strncmp(sStr1,sStr,n)

sStr= ‘1345’sStr= ’13bc’n= 3

printcmp(sStr1[0:n],sStr[0:n])

复制指定长度的字符#strncpy(sStr1,sStr,n)

sStr= ”sStr= ‘1345’n= 3sStr=sStr[0:n]printsStr

将字符串前n个字符替换为指定的字符#strnset(sStr1,ch,n)

sStr= ‘1345’ch= ‘r’n= 3sStr= n * ch + sStr1[3:]printsStr

扫描字符串#strpbrk(sStr1,sStr)

sStr= ‘cekjgdklab’sStr= ‘gka’nPos= -1

for c insStr1:if c insStr:

nPos=sStr1.index(c)break

printnPos

翻转字符串#strrev(sStr1)

sStr= ‘abcdefg’sStr= sStr1[::-1]printsStr

查找字符串#strstr(sStr1,sStr)

sStr= ‘abcdefg’sStr= ‘cde’

printsStr1.find(sStr)

分割字符串#strtok(sStr1,sStr)

sStr= ‘ab,cde,fgh,ijk’sStr= ‘,’sStr= sStr1[sStr1.find(sStr) + 1:]printsStr

或者

s= ‘ab,cde,fgh,ijk’

print(s.split(‘,’))

连接字符串

delimiter= ‘,’mylist= [‘Brazil’, ‘Russia’, ‘India’, ‘China’]printdelimiter.join(mylist)

PHP 中 addslashes 的实现defaddslashes(s):

d= {‘”‘:’\\”‘, “‘”:”\\'”, “\0″:”\\\0”, “\\”:”\\\\”}return ”.join(d.get(c, c) for c ins)

s= “John ‘Johny’ Doe (a.k.a. \”Super Joe\”)\\\0″

printsprintaddslashes(s)

只显示字母与数字def OnlyCharNum(s,oth=”):

s=s.lower();

fomart= ‘abcdefghijklmnopqrstuvwxyz013456789’

for c ins:if not c infomart:

s= s.replace(c,”);returns;print(OnlyStr(“a000 aa-b”))